A device for machining an internal threaded hole of a drawbar ball head

Abstract

The utility model relates to a kind of inner thread hole machining device of pull rod ball head, belong to automobile pull rod ball head processing equipment technical field, including bottom plate, sliding plate, locking assembly, clamping assembly, chamfering lathe end face forming tool, drilling drill bit and extruding thread cutter, sliding plate is slidably installed on bottom plate by slide rail and slide, fixed mounting telescopic pneumatic cylinder is installed on the bottom plate between slide rail, the piston rod of telescopic pneumatic cylinder is connected with sliding plate, locking assembly is symmetrically detachably installed on sliding plate, clamping assembly is fixedly installed on the sliding plate outside locking assembly by bolt, push frame is equipped on the bottom plate outside clamping assembly by push gas cylinder, chamfering lathe end face forming tool, drilling drill bit and extruding thread cutter are sequentially equipped on push frame with interval.The device effectively reduces manual labor, improves the processing efficiency of automobile pull rod ball head thread hole, at the same time, solve the problem that existing manual drilling, tapping consistency is poor, bring significant economic benefits for enterprise.

Description

Technical Field

[0001] This utility model relates to a device for machining the internal thread hole of a tie rod ball joint, belonging to the technical field of automotive tie rod ball joint machining equipment. Background Technology

[0002] The tie rod ball joint is a key component connecting the steering system and the suspension system. Its main functions include force transmission, steering control, and vehicle stability adjustment. The tie rod ball joint is formed by a single piece of ring and pin (see the instruction manual). Figure 5 ).

[0003] To facilitate the assembly of automotive tie rod ball joints, threaded holes need to be machined on the end face of the tie rod pin. The traditional method for machining threaded holes in automotive tie rod ball joints is as follows: first, the worker uses a cutting tool to cut the end face of the pin flat, then uses a drilling tool to drill a hole in the flattened end face. After drilling, the worker uses a tapping tool to machine the internal thread into the hole.

[0004] The above-mentioned manual step-by-step processing is not only cumbersome, time-consuming, and labor-intensive, but also involves a large amount of manual labor and a long processing cycle, which directly affects the processing efficiency of the threaded holes of the automotive tie rod ball joints. On the other hand, due to individual differences among employees, manual tapping by workers leads to poor consistency of the threaded holes processed in the automotive tie rod ball joints, affecting the yield rate of automotive tie rod ball joint products. Therefore, it is necessary to improve it. Summary of the Invention

[0005] The purpose of this utility model is to provide a device for machining the internal thread hole of the ball joint of an automobile tie rod, which can effectively reduce manual labor, improve the machining efficiency of the thread hole of the ball joint, and solve the problem of poor consistency in existing manual drilling and tapping.

[0006] The technical solution of this utility model is: A device for machining internal threads in a tie rod ball joint includes a base plate, a slide plate, a locking assembly, a clamping assembly, a chamfering end-face forming tool, a drilling bit, and a threading tool. The device is characterized in that: a slide plate is slidably mounted on the base plate via slide rails and a slide block; a telescopic cylinder is fixedly mounted on the base plate between the slide rails; the piston rod of the telescopic cylinder is connected to the slide plate; locking assemblies are symmetrically and detachably mounted on the slide plate; a clamping assembly is fixedly mounted on the slide plate outside the locking assembly via bolts; a pusher frame is mounted on the base plate outside the clamping assembly via a pusher cylinder; and the chamfering end-face forming tool, the drilling bit, and the threading tool are sequentially mounted on the pusher frame at intervals.

[0007] The locking assembly includes a movable seat, a lock seat, a positioning pin, and a pressure head. A lifting cylinder is mounted on the movable seat via a rotary motor. A pressure head is mounted on the piston rod of the lifting cylinder via a pressure plate and a connecting rod. A lock seat is fixedly mounted on the movable seat on one side of the rotary motor, and a positioning pin is detachably mounted on the lock seat.

[0008] The movable seat has a first keyway at its bottom and second keyways on both sides of the first keyway. The movable seat is slidably connected to the slide plate through the first and second keyways. The movable seat is provided with multiple first locking screws.

[0009] The positioning pin includes a positioning pin body, a connecting seat, and a second locking screw. The positioning pin body is cylindrical, and a connecting seat is fixedly installed at the bottom end of the positioning pin body. The connecting seat has a "convex" cross-section, and a sliding groove is provided on the locking seat corresponding to the connecting seat. The sliding groove and the connecting seat are slidably connected. A stepped hole is provided through the connecting seat at the center of the positioning pin body, and a second locking screw is installed in the internal thread of the stepped hole.

[0010] The clamping assembly includes a fixed plate, a guide rail, a positioning plate, and a clamping cylinder. The fixed plate is fixedly mounted with the guide rail, and positioning plates are respectively provided at both ends of the guide rail. Limit rods are threadedly installed on the positioning plates. The clamping cylinder is symmetrically slidably mounted on the guide rail through the guide plate. A clamping head is fixedly mounted on the piston rod of the clamping cylinder. The guide plate is connected to the guide rail through a third locking screw.

[0011] The clamping head is rectangular, with a clamping groove along the X-axis and a rectangular weight-reducing groove along the Y-axis on the end face of the clamping head.

[0012] The advantages of this utility model are: The device for machining the internal thread hole of the tie rod ball joint aligns one end of the ring of the tie rod ball joint to be machined with the locating pin body. Then, the ring of the tie rod ball joint is fitted onto the locating pin body, so that the pin of the tie rod ball joint is positioned between two clamping heads. The piston rod of the clamping cylinder extends, causing the two clamping heads to move closer together. The clamping grooves of the two clamping heads fix the pin of the tie rod ball joint. The device also controls the rotation of the drive shaft of the rotary motor, which drives the lifting cylinder, pressure plate, and pressure head to rotate synchronously, positioning the pressure head directly above the ring of the tie rod ball joint. Finally, the piston of the lifting cylinder is controlled to... The rod retracts, the pressure plate and pressure head move downwards, and the pressure head contacts the ring of the tie rod ball head. The locking seat and pressure head work together to fix the ring of the tie rod ball head. After the tie rod ball head is fixed, the piston rod of the telescopic cylinder retracts. When the end face of the pin of the tie rod ball head aligns sequentially with the chamfering end face forming tool, drilling bit, and thread extrusion tool, the internal thread hole machining device for the tie rod ball head has completed its machining. Afterwards, the machined workpiece is disassembled and replaced with the workpiece to be machined, and the internal thread hole machining device for the tie rod ball head can enter the next work cycle. This internal thread hole machining device for the tie rod ball head has a compact structure and ingenious design, effectively reducing manual labor and improving the machining efficiency of the thread holes in automotive tie rod ball heads. At the same time, it solves the problem of poor consistency in existing manual drilling and tapping, bringing significant economic benefits to enterprises. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the clamping component in this utility model; Figure 3 This is a three-dimensional structural diagram of the locking component in this utility model; Figure 4 This is a top view of the structure of this utility model; Figure 5 This is a schematic diagram of the three-dimensional structure of the unprocessed tie rod ball head in this utility model.

[0014] In the diagram: 1. Base plate; 2. Slide plate; 3. Chamfering end face forming tool; 4. Drill bit; 5. Threading tool; 6. Slide rail; 7. Slide block; 8. Tie rod ball joint; 9. Telescopic cylinder; 10. Movable seat; 11. Lock seat; 12. Pressure head; 13. First keyway; 14. Second keyway; 15. First locking screw; 16. Rotary motor; 17. Lifting cylinder; 18. Pressure plate; 19. Connecting rod; 20. Positioning pin. 21. Body; 22. Connecting seat; 23. Second locking screw; 24. Slide groove; 25. Fixing plate; 26. Guide rail; 27. Positioning plate; 28. Clamping cylinder; 29. ​​Limiting rod; 30. Guide plate; 31. Third locking screw; 32. Clamping head; 33. Clamping groove; 34. Rectangular weight reduction groove; 35. Pushing cylinder; 36. Pushing frame; 37. Forming tool drive motor; 38. Drill bit motor; 39. Threading tool drive motor. Detailed Implementation

[0015] See appendix Figure 1-5 The device for machining the internal thread hole of the tie rod ball head includes a base plate 1, a slide plate 2, a locking assembly, a clamping assembly, a chamfering end face forming tool 3, a drilling bit 4, and a thread extrusion tool 5. A slide rail 6 is fixedly installed on the base plate 1, a slide seat 7 is slidably installed on the slide rail 6, and a slide plate 2 is fixedly installed on the slide seat 7. A telescopic cylinder 9 is fixedly installed on the base plate 1 between the slide rails 6. The piston rod of the telescopic cylinder 9 is connected to the slide plate 2. During operation, the piston rod of the telescopic cylinder 9 can drive the slide plate 2 to move along the axial direction of the slide rail 6.

[0016] The sliding plate 2 is symmetrically and detachably equipped with locking components, which include a movable seat 10, a locking seat 11, a positioning pin, and a pressure head 12. The bottom of the movable seat 10 is provided with a first keyway 13, and the movable seats 10 on both sides of the first keyway 13 are provided with second keyways 14. The movable seat 10 is slidably connected to the sliding plate 2 through the first keyway 13 and the second keyway 14. Multiple first locking screws 15 are threaded on the movable seat 10. The first locking screws 15 are in contact with the sliding plate 2. During operation, the movable seat 10 can slide in the axial direction of the sliding plate 2 through the first keyway 13 and the second keyway 14. The friction generated by the first locking screws 15 is used to fix the movable seat 10 on the sliding plate 2.

[0017] A rotary motor 16 is fixedly mounted on the movable base 10 via a motor mounting bracket. A lifting cylinder 17 is fixedly mounted on the drive shaft of the rotary motor 16 via a cylinder mounting bracket. A pressure plate 18 is fixedly mounted on the piston rod of the lifting cylinder 17. A connecting rod 19 is fixedly mounted on the pressure plate 18. A pressure head 12 is fixedly mounted at the bottom end of the connecting rod 19. The pressure head 12 is cylindrical. During operation, the rotary motor 16 drives the lifting cylinder 17, the pressure plate 18, and the pressure head 12 to rotate. The piston rod of the lifting cylinder 17 drives the pressure plate 18 and the pressure head 12 to move up and down.

[0018] A lock seat 11 is fixedly installed on the movable seat 10 on one side of the rotary motor 16. The lock seat 11 is rectangular and a positioning pin is detachably installed on the lock seat 11. The positioning pin includes a positioning pin body 20, a connecting seat 21, and a second locking screw 22. The positioning pin body 20 is cylindrical, and the connecting seat 21 is fixedly installed at the bottom of the positioning pin body 20. The connecting seat 21 has a "convex" cross-section. A sliding groove 23 is provided on the lock seat 11 corresponding to the connecting seat 21. The sliding groove 23 and the connecting seat 21 are slidably connected. A stepped hole is provided through the connecting seat 21 at the center of the positioning pin body 20. The second locking screw 22 is threaded in the stepped hole and contacts the lock seat 11. During operation, the connecting seat 21 slides through the sliding groove 23 of the lock seat 11, and the connecting seat 21 can drive the positioning pin body 20 to slide synchronously. The friction generated by the second locking screw 22 is used to fix the connecting seat 21 and the positioning pin body 20 on the lock seat 11.

[0019] A clamping assembly is bolted to the outer slide plate 2 of the locking assembly. The clamping assembly includes a fixing plate 24, a guide rail 25, a positioning plate 26 and a clamping cylinder 27. The fixing plate 24 is bolted to the slide plate 2.

[0020] A guide rail 25 is fixedly installed on the fixed plate 24. Positioning plates 26 are fixedly installed at both ends of the guide rail 25. Limiting rods 28 are threadedly installed on the positioning plates 26. The limiting rods 28 are used to limit the guide plate 29.

[0021] Guide plates 29 are symmetrically slidably mounted on guide rail 25. The cross-section of guide plate 29 is "L" shaped. A clamping cylinder 27 is fixedly mounted on guide plate 29. A third locking screw 30 is threaded onto guide plate 29. The third locking screw 30 contacts guide rail 25. During operation, guide plate 29 can slide along the axial direction of guide rail 25. The friction force generated by the third locking screw 30 is used to fix guide plate 29 on guide rail 25.

[0022] A clamping head 31 is fixedly installed on the piston rod of the clamping cylinder 27. The clamping head 31 is rectangular. A clamping groove 32 is opened on the end face of the clamping head 31 along the X-axis direction. The interface of the clamping groove 32 is "V" shaped. A rectangular weight-reducing groove 33 is opened on the end face of the clamping head 31 along the Y-axis direction. During operation, the piston rods of the two clamping cylinders 27 extend at the same time, and the two clamping heads 31 move closer to each other. The pin is fixed by the clamping groove 32 of the two clamping heads 31.

[0023] A pusher cylinder 34 is fixedly mounted on the base plate 1 on the outside of the clamping assembly via a cylinder mounting bracket. A pusher frame 35 is fixedly mounted on the piston rod of the pusher cylinder 34. The pusher frame 35 has a "U" shaped cross section. A chamfering end face forming tool 3, a drilling bit 4, and a thread extrusion tool 5 are fixedly mounted on the pusher frame 35 at intervals. A forming tool drive motor 36 is fixedly mounted on the pusher frame 35 corresponding to the chamfering end face forming tool 3. The forming tool drive motor 36 is connected to the chamfering end face forming tool 3 via a tool mounting seat. A drill bit motor 37 is fixedly mounted on the pusher frame 35 corresponding to the drilling bit 4. The drill bit motor 37 is connected to the drilling bit 4 via a tool mounting seat. A thread extrusion tool drive motor 38 is fixedly mounted on the pusher frame 35 corresponding to the thread extrusion tool 5. The thread extrusion tool drive motor 38 is fixedly connected to the thread extrusion tool 5 via a tool mounting seat.

[0024] In the internal thread hole machining device for the tie rod ball head, the telescopic cylinder 9, rotary motor 16, lifting cylinder 17, clamping cylinder 27, pushing cylinder 34, forming tool drive motor 36, drill motor 37, and threading tool drive motor 38 are controlled by a CNC system to perform their actions in a sequential and orderly manner. The CNC system used is the GSK 988TD standard dual-channel turning center CNC system from Guangzhou CNC Equipment Co., Ltd., which is existing technology.

[0025] When the internal threading device for the tie rod ball head is working, firstly, one end of the ring of the tie rod ball head 8 to be processed is aligned with the locating pin body 20. Then, the ring of the tie rod ball head 8 is fitted onto the locating pin body 20, so that the pin of the tie rod ball head 8 is located between the two clamping heads 31. The piston rod of the clamping cylinder 27 is extended, and the two clamping heads 31 move closer to each other. The clamping grooves 32 of the two clamping heads 31 fix the pin of the tie rod ball head 8. Then... The drive shaft of the rotary motor 16 is controlled to rotate 90°. The drive shaft of the rotary motor 16 drives the lifting cylinder 17, the pressure plate 18, and the pressure head 12 to rotate 90° synchronously, so that the pressure head 12 is located directly above the ring of the tie rod ball head 8. Then, the piston rod of the lifting cylinder 17 is controlled to retract, and the pressure plate 18 and the pressure head 12 move downward. The pressure head 12 contacts the ring of the tie rod ball head 8, and the ring of the tie rod ball head 8 is fixed by the cooperation of the locking seat 11 and the pressure head 12.

[0026] After the tie rod ball head 8 is fixed, the piston rod of the telescopic cylinder 9 is retracted. When the pin end face of the tie rod ball head 8 corresponds to the chamfering end face forming tool 3, the piston rod of the telescopic cylinder 9 is stopped, and the forming tool drive motor 36 is started. The forming tool drive motor 36 drives the chamfering end face forming tool 3 to rotate through the tool mounting seat, and the piston rod of the push cylinder 34 is extended. The piston rod pushes the push frame 35 to move, so that the chamfering end face forming tool 3 approaches the pin end face of the tie rod ball head 8 to complete the end face milling. After the milling is completed, the piston rod of the push cylinder 34 is reset.

[0027] Continue to control the piston rod of the telescopic cylinder 9 to retract. When the pin end face of the tie rod ball head 8 corresponds with the drilling bit 4, stop the piston rod of the telescopic cylinder 9 and control the drill bit motor 37 to start. The drill bit motor 37 drives the drilling bit 4 to rotate through the tool mounting seat. Control the piston rod of the push cylinder 34 to extend. The piston rod pushes the push frame 35 to move, so that the drilling bit 4 approaches the pin end face of the tie rod ball head 8 to complete the drilling of the end face. After the drilling is completed, control the piston rod of the push cylinder 34 to reset.

[0028] Continue to control the piston rod of the telescopic cylinder 9 to retract. When the pin end face of the tie rod ball head 8 corresponds with the extrusion thread cutter 5, stop the piston rod of the telescopic cylinder 9, control the thread cutter drive motor 38 to start, and the thread cutter drive motor 38 drives the extrusion thread cutter 5 to rotate through the tool mounting seat. Control the piston rod of the push cylinder 34 to extend, and the piston rod pushes the push frame 35 to move, so that the extrusion thread cutter 5 approaches the hole on the pin end face of the tie rod ball head 8 to complete the threading process of the hole. After the threading is completed, control the piston rod of the push cylinder 34 to reset.

[0029] At this point, the internal thread hole machining device for the tie rod ball head has completed the machining of the tie rod ball head 8. After disassembling the machined workpiece and replacing it with the workpiece to be machined, the internal thread hole machining device for the tie rod ball head can enter the next work cycle.

[0030] In conclusion, this compact and ingeniously designed tie rod ball head processing device effectively solves many problems in existing processing methods, bringing significant economic and social benefits to enterprises.

Claims

1. A device for machining internal threaded holes in a tie rod ball joint, comprising a base plate (1), a sliding plate (2), a locking assembly, a clamping assembly, a chamfering end-face forming tool (3), a drilling bit (4), and a threading tool (5), characterized in that: A sliding plate (2) is slidably mounted on the base plate (1) via a slide rail (6) and a slide block (7). A telescopic cylinder (9) is fixedly mounted on the base plate (1) between the slide rails (6). The piston rod of the telescopic cylinder (9) is connected to the sliding plate (2). A locking assembly is symmetrically and detachably mounted on the sliding plate (2). A clamping assembly is fixedly mounted on the sliding plate (2) outside the locking assembly via bolts. A pusher frame (35) is mounted on the base plate (1) outside the clamping assembly via a pusher cylinder (34). A chamfering end face forming tool (3), a drilling bit (4), and a thread extrusion tool (5) are sequentially mounted on the pusher frame (35) at intervals.

2. The device for machining the internal thread hole of a tie rod ball head according to claim 1, characterized in that: The locking assembly includes a movable seat (10), a lock seat (11), a positioning pin, and a pressure head (12). A lifting cylinder (17) is mounted on the movable seat (10) via a rotary motor (16). The pressure head (12) is mounted on the piston rod of the lifting cylinder (17) via a pressure plate (18) and a connecting rod (19). A lock seat (11) is fixedly mounted on the movable seat (10) on one side of the rotary motor (16). A positioning pin is detachably mounted on the lock seat (11).

3. The device for machining the internal thread hole of a tie rod ball head according to claim 2, characterized in that: The movable seat (10) is provided with a first keyway (13) at the bottom, and a second keyway (14) is provided on the movable seats (10) on both sides of the first keyway (13). The movable seat (10) is slidably connected to the slide plate (2) through the first keyway (13) and the second keyway (14). A plurality of first locking screws (15) are provided on the movable seat (10).

4. The device for machining the internal thread hole of a tie rod ball head according to claim 2, characterized in that: The positioning pin includes a positioning pin body (20), a connecting seat (21), and a second locking screw (22). The positioning pin body (20) is cylindrical. The connecting seat (21) is fixedly installed at the bottom of the positioning pin body (20). The connecting seat (21) has a "convex" cross-section. A sliding groove (23) is provided on the locking seat (11) corresponding to the connecting seat (21). The sliding groove (23) and the connecting seat (21) are slidably connected. A stepped hole is provided through the connecting seat (21) at the center of the positioning pin body (20). The second locking screw (22) is installed in the internal thread of the stepped hole.

5. The device for machining the internal thread hole of a tie rod ball head according to claim 1, characterized in that: The clamping assembly includes a fixed plate (24), a guide rail (25), a positioning plate (26), and a clamping cylinder (27). The fixed plate (24) is fixedly mounted with the guide rail (25). Positioning plates (26) are respectively provided at both ends of the guide rail (25). Limiting rods (28) are threadedly installed on the positioning plates (26). The clamping cylinder (27) is symmetrically slidably mounted on the guide rail (25) through a guide plate (29). A clamping head (31) is fixedly mounted on the piston rod of the clamping cylinder (27). The guide plate (29) is connected to the guide rail (25) through a third locking screw (30).

6. The device for machining the internal thread hole of a tie rod ball head according to claim 5, characterized in that: The clamping head (31) is a rectangular body. A clamping groove (32) is provided on the end face of the clamping head (31) along the X-axis direction, and a rectangular weight reduction groove (33) is provided on the end face of the clamping head (31) along the Y-axis direction.

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